Bently Nevada 330707-00-26-10-11-CN 3300 XL 11mm Probe

Bently Nevada 330707-00-26-10-11-CN – 3300 XL 11mm Proximity Probe

Product Introduction

The Bently Nevada 330707-00-26-10-11-CN is a precision-engineered member of the 3300 XL series. This 11 mm proximity probe is specifically designed for non-contact vibration and position monitoring of rotating equipment. Consequently, it is an ideal choice for predictive maintenance in turbines, pumps, and compressors. This particular variant features a 2.6-inch overall case length and a shorter 1.0-meter cable, making it perfect for applications with limited space or short-distance signal routing. Additionally, this model carries agency approval option 00, meaning no formal certification is required.

Core Technical Parameters

This Bently Nevada 330707 probe incorporates a Polyphenylene sulfide (PPS) tip, which provides outstanding resistance to chemicals and mechanical wear. Furthermore, the probe case is manufactured from AISI 304 stainless steel (SST) to ensure excellent corrosion protection. The probe comes equipped with a 75 Ω triaxial FEP-insulated cable that measures 1.0 meter in total length. For signal accuracy, the DC resistance from the center conductor to the outer conductor is rated at 5.9 ± 0.5 ohms, which is lower than longer cable variants. The assembly features a miniature coaxial ClickLoc connector with standard cable, ensuring a secure and vibration-proof connection. The suffix CN indicates this model is configured for the Chinese market.

Environmental and Mechanical Specifications

The operating and storage temperature range spans from -51°C to +177°C (-60°F to +351°F). However, users should note that prolonged exposure below -34°C (30°F) can shorten the pressure seal's service life. The probe case thread is 5/8-18 UNF, with a maximum thread engagement of 0.938 inches. For installation, the recommended torque is 15.2 N•m (133 in•lb), while the maximum allowable torque is 45.2 N•m (400 in•lb). Meanwhile, the connector should only be finger-tightened, not exceeding 0.565 N•m (5 in•lb). Additionally, the cable's minimum bend radius is 25.4 mm (1.0 inch), regardless of whether stainless steel armor is present. The overall case length option 26 means this probe measures 2.6 inches, providing deeper reach than standard models.

Installation Best Practices

First, confirm that the mounting hole is clean and correctly tapped for the 5/8-18 UNF thread. Next, thread the Bently Nevada 330707 probe into the housing while monitoring the gap voltage with a compatible proximity system. Specifically, apply a torque wrench set to 15.2 N•m to achieve optimal tightness without overstressing the case. Then, attach the ClickLoc connector by turning it finger-tight only; tools are not required. For cable routing with the shorter 1-meter cable, ensure all bends maintain a radius larger than 25.4 mm to prevent internal conductor stress. Finally, verify the electrical integrity by measuring the resistance between conductors, which should read 5.9 ± 0.5 ohms. The 2.6-inch case offers additional thread engagement for deep-well or recessed mounting applications.

Packaging and Logistics

Each package includes the following items:

• 1 x Bently Nevada 330707-00-26-10-11-CN probe assembly with 1‑meter cable

• 1 x ClickLoc connector (factory-installed)

• 1 x Installation reference sheet

All shipments are dispatched worldwide via FedEx, UPS, or DHL to ensure rapid and trackable delivery. Calibration certificates and warranty documents are not included in this standard packaging.

Frequently Asked Questions

1. What is the advantage of the 1-meter cable on this Bently Nevada 330707 probe?
The shorter cable minimizes signal loss and resistance. It is ideal for installations where the probe is located very close to the monitoring system or junction box.

2. What does the CN suffix indicate on this 3300 XL probe?
The CN suffix typically indicates configuration for the Chinese market. However, the probe's specifications and performance remain identical to standard models.

3. Is this probe suitable for high-pressure environments?
Yes, it uses a Viton O-ring to seal differential pressure. Nevertheless, it is not pressure-tested before shipment. For testing needs, please contact the custom design department.

4. Why does this probe have a lower resistance value than 9-meter models?
The DC resistance is 5.9 ± 0.5 ohms for the 1-meter cable, compared to 8.5 ohms for 9-meter versions. This lower resistance reflects the shorter conductor length.

5. What is the minimum bend radius for the probe cable?
The minimum bend radius is 25.4 mm (1.0 inch) for both armored and unarmored versions. Exceeding this limit may degrade signal quality or cause permanent cable damage.